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Merge pull request #11170 from annando/lemmy 

Lemmy support added
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Hypolite Petovan 2022-01-22 20:58:50 -05:00 committed by GitHub
parent 0476a82f4d 43b9e39c6a
commit 52b119cba3
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 47 additions and 1 deletions
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42
src/Protocol/ActivityPub/Receiver.php
View File

@ -56,7 +56,7 @@ class Receiver
{
const PUBLIC_COLLECTION = 'as:Public';
const ACCOUNT_TYPES = ['as:Person', 'as:Organization', 'as:Service', 'as:Group', 'as:Application'];
const CONTENT_TYPES = ['as:Note', 'as:Article', 'as:Video', 'as:Image', 'as:Event', 'as:Audio'];
const CONTENT_TYPES = ['as:Note', 'as:Article', 'as:Video', 'as:Image', 'as:Event', 'as:Audio', 'as:Page'];
const ACTIVITY_TYPES = ['as:Like', 'as:Dislike', 'as:Accept', 'as:Reject', 'as:TentativeAccept'];
const TARGET_UNKNOWN = 0;
@ -321,6 +321,20 @@ class Receiver
$object_type = self::fetchObjectType($activity, $object_id, $uid);
// Fetch the activity on Lemmy "Announce" messages (announces of activities)
if (($type == 'as:Announce') && in_array($object_type, self::ACTIVITY_TYPES)) {
$data = ActivityPub::fetchContent($object_id, $uid);
if (!empty($data)) {
$type = $object_type;
$activity = JsonLD::compact($data);
// Some variables need to be refetched since the activity changed
$actor = JsonLD::fetchElement($activity, 'as:actor', '@id');
$object_id = JsonLD::fetchElement($activity, 'as:object', '@id');
$object_type = self::fetchObjectType($activity, $object_id, $uid);
}
}
// Fetch the content only on activities where this matters
// We can receive "#emojiReaction" when fetching content from Hubzilla systems
if (in_array($type, ['as:Create', 'as:Update', 'as:Announce']) || strpos($type, '#emojiReaction')) {
@ -473,6 +487,12 @@ class Receiver
return;
}
// Lemmy is announcing activities.
// We are changing the announces into regular activities.
if (($type == 'as:Announce') && in_array($object_data['type'] ?? '', self::ACTIVITY_TYPES)) {
$type = $object_data['type'];
}
if (!$trust_source) {
Logger::info('Activity trust could not be achieved.', ['id' => $object_data['object_id'], 'type' => $type, 'signer' => $signer, 'actor' => $actor, 'attributedTo' => $attributed_to]);
return;
@ -955,6 +975,18 @@ class Receiver
return false;
}
// Lemmy is resharing "create" activities instead of content
// We fetch the content from the activity.
if (in_array($type, ['as:Create'])) {
$object = $object['as:object'];
$type = JsonLD::fetchElement($object, '@type');
if (empty($type)) {
Logger::info('Empty type');
return false;
}
$object_data = self::processObject($object);
}
// We currently don't handle 'pt:CacheFile', but with this step we avoid logging
if (in_array($type, self::CONTENT_TYPES) || ($type == 'pt:CacheFile')) {
$object_data = self::processObject($object);
@ -1329,6 +1361,14 @@ class Receiver
// An empty "id" field is translated to "./" by the compactor, so we have to check for this content
if (empty($object_data['reply-to-id']) || ($object_data['reply-to-id'] == './')) {
$object_data['reply-to-id'] = $object_data['id'];
// On activities the "reply to" is the id of the object it refers to
if (in_array($object_data['object_type'], self::ACTIVITY_TYPES)) {
$object_id = JsonLD::fetchElement($object, 'as:object', '@id');
if (!empty($object_id)) {
$object_data['reply-to-id'] = $object_id;
}
}
} else {
// Some systems (e.g. GNU Social) don't reply to the "id" field but the "uri" field.
$replyToId = Item::getURIByLink($object_data['reply-to-id']);

6
src/Util/ParseUrl.php
View File

@ -60,6 +60,12 @@ class ParseUrl
public static function getContentType(string $url)
{
$curlResult = DI::httpClient()->head($url);
// Workaround for systems that can't handle a HEAD request
if (!$curlResult->isSuccess() && ($curlResult->getReturnCode() == 405)) {
$curlResult = DI::httpClient()->get($url, [HttpClientOptions::CONTENT_LENGTH => 1000000]);
}
if (!$curlResult->isSuccess()) {
return [];
}